Let the hive mind of Engadget get that for you.
"I own an iPhone 3G and I'm looking for a decent speaker / alarm clock for it. I am going to listen music in a mid-sized room, so I want nice quality speakers with solid bass. I also want to use it as an alarm clock, so it would be great if there is such a feature. The price can be low-mid to mid-high range. I was looking at the Klipsch iGroove SXT; it's powerful, slick and the reviews are good, but it doesn't have an alarm clock feature. It's no deal breaker if I can set it up from the iPhone, but I'm not sure. Thanks!"
-Phone
-More Video Codec Support
-Mini/HDMI port on the device!
Would like, but not required:
-More Apps
-See Song List (like in previous Zune's)
-Auto Play when headphones plugged back in (after they were recently removed)
-Improved Web Browser
-Ad-Hoc / WPA/2 Enterprise Network Connectivity
-Customizable EQ
-64GB/128GB Model